Spool hydraulic directional control valve D68x

pilotcompact

Product description
Moog valves of the D68x series are hydraulically piloted proportional valves with integrated electronics and an analog interface. The D68x proportional valves feature spools mounted directly in the valve body and hydraulically piloted, enabling significantly higher flow rates and various failsafe options. This series uses a compact pilot (miniDDV) noted for excellent dynamics and high efficiency. Valves are available in two-stage construction in sizes 05, 07, 08 and 10. These proportional valves are designed for demanding industrial applications and provide functional flexibility and excellent dynamics.

Features

• Optimized valve-body design for high nominal flow
• High energy efficiency through pilot variants with low internal leakage
• Low minimum pilot pressure range required
• Integrated amplifier and control electronics for high functional flexibility
• Excellent dynamic response due to high natural frequency of the pilot stage
• Various failsafe options available for optimal application adaptation
• Optional: new pilot valve with integrated electronics and pilot position feedback

Specifications
Models: D681 | D682 | D683 | D684 | D685
Function: Flow control
Mounting pattern: ISO 4401 Size 05 (NG10) | ISO 4401 Size 07 (NG16) | ISO 4401 Size 08 (NG25) | ISO 4401 Size 08 (NG25+) | ISO 4401 Size 10 (NG32)
Hydraulic data - nominal flow at ΔpN 5 bar per control edge: 30 to 80 l/min | 150 to 250 l/min | 350 l/min | 550 l/min | 1000 to 1500 l/min
Hydraulic data - max. flow: 180 l/min | 600 l/min | 1500 l/min | 1500 l/min | 3600 l/min
Maximum operating pressure: Ports P, A, B - 350 bar
Port T with internal Y - 70 bar (some variants 50 bar)
Port T with external Y - 250 bar or 350 bar (depending on variant)
Step response 0–100% step: 9–11 ms | 10–13 ms | 10–18 ms | 11–26 ms | 35–40 ms

Electrical data
Supply voltage: 24 V DC (18 to 32 V DC)
Control signal options: ±10 V, ±10 mA and 4 to 20 mA
Electrical interfaces: 6+PE, 11+PE

Characteristics / Technical specifications

• Series: D68x (models D681–D685)
• Construction: two-stage
• Available sizes: Size 05 (NG10), 07 (NG16), 08 (NG25), 08 (NG25+), 10 (NG32)
• Nominal flows (at ΔpN 5 bar): model-dependent 30–1500 l/min (typical ranges: 30–80; 150–250; 350; 550; 1000–1500 l/min)
• Maximum flows: up to 3600 l/min (model-dependent)
• Max. operating pressure Ports P/A/B: 350 bar
• Port T: depending on Y configuration 50 / 70 / 250 / 350 bar
• Step response (0–100% step): model-dependent 9–40 ms
• Supply voltage: 24 V DC (18–32 V DC)
• Signal inputs: ±10 V, ±10 mA, 4–20 mA
• Electrical interface options: 6+PE or 11+PE